The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 21, 2006
Filed:
Sep. 07, 2004
Margaret Ghiron, Allentown, PA (US);
Prakash Gothoskar, Allentown, PA (US);
Robert Keith Montgomery, Easton, PA (US);
Vipulkumar Patel, Monmouth Junction, NJ (US);
Soham Pathak, Allentown, PA (US);
Kalpendu Shastri, Orefield, PA (US);
Katherine A. Yanushefski, Zionsville, PA (US);
Margaret Ghiron, Allentown, PA (US);
Prakash Gothoskar, Allentown, PA (US);
Robert Keith Montgomery, Easton, PA (US);
Vipulkumar Patel, Monmouth Junction, NJ (US);
Soham Pathak, Allentown, PA (US);
Kalpendu Shastri, Orefield, PA (US);
Katherine A. Yanushefski, Zionsville, PA (US);
SiOptical, Inc., Allentown, PA (US);
Abstract
A coupling arrangement for allowing multiple wavelengths to be coupled into and out of a relatively thin silicon optical waveguide layer utilizes a diffractive optical element, in the form of a volume phase grating, in combination with a prism coupling structure. The diffractive optical element is formed to comprise a predetermined modulation index sufficient to diffract the various wavelengths through angles associated with improving the coupling efficiency of each wavelength into the silicon waveguide. The diffractive optical element may be formed as a separate element, or formed as an integral part of the coupling facet of the prism coupler.